...Patchy Dense Fog This Morning Across The Region... Patchy dense fog continues to develop this morning in and around the typical river valley locations. However, fog is also expanding into portions of the metro areas as well as along the major interstates. Motorists are urged to use caution during their commute this morning. Allow for extra time to reach your destination, provide more distance between vehicles, lower your speed, and use your low beam headlights. The fog should lift by 9 to 10 AM this morning.